From 54f97d1988f623ba7422e13a504caeb5701ba93c Mon Sep 17 00:00:00 2001 From: Xavier Leroy Date: Fri, 21 Aug 2015 11:05:36 +0200 Subject: Refactoring of builtins and annotations in the back-end. Before, the back-end languages had distinct instructions - Iannot for annotations, taking structured expressions (annot_arg) as arguments, and producing no results' - Ibuiltin for other builtins, using simple pseudoregs/locations/registers as arguments and results. This branch enriches Ibuiltin instructions so that they take structured expressions (builtin_arg and builtin_res) as arguments and results. This way, - Annotations fit the general pattern of builtin functions, so Iannot instructions are removed. - EF_vload_global and EF_vstore_global become useless, as the same optimization can be achieved by EF_vload/vstore taking a structured argument of the "address of global" kind. - Better code can be generated for builtin_memcpy between stack locations, or volatile accesses to stack locations. Finally, this commit also introduces a new kind of external function, EF_debug, which is like EF_annot but produces no observable events. It will be used later to transport debug info through the back-end, without preventing optimizations. --- backend/Renumber.v | 1 - 1 file changed, 1 deletion(-) (limited to 'backend/Renumber.v') diff --git a/backend/Renumber.v b/backend/Renumber.v index 634fe56a..0a2c2f12 100644 --- a/backend/Renumber.v +++ b/backend/Renumber.v @@ -48,7 +48,6 @@ Definition renum_instr (i: instruction) : instruction := | Icall sg ros args res s => Icall sg ros args res (renum_pc s) | Itailcall sg ros args => i | Ibuiltin ef args res s => Ibuiltin ef args res (renum_pc s) - | Iannot ef args s => Iannot ef args (renum_pc s) | Icond cond args s1 s2 => Icond cond args (renum_pc s1) (renum_pc s2) | Ijumptable arg tbl => Ijumptable arg (List.map renum_pc tbl) | Ireturn or => i -- cgit